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/* $NetBSD: if_gem_sbus.c,v 1.14 2022/09/25 18:03:04 thorpej Exp $ */
/*-
* Copyright (c) 2006 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Martin Husemann.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* SBus front-end for the GEM network driver
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_gem_sbus.c,v 1.14 2022/09/25 18:03:04 thorpej Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/syslog.h>
#include <sys/device.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_ether.h>
#include <net/if_media.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <sys/bus.h>
#include <sys/intr.h>
#include <machine/autoconf.h>
#include <dev/sbus/sbusvar.h>
#include <dev/ic/gemreg.h>
#include <dev/ic/gemvar.h>
struct gem_sbus_softc {
struct gem_softc gsc_gem; /* GEM device */
void *gsc_ih;
bus_space_handle_t gsc_sbus_regs_h;
};
int gemmatch_sbus(device_t, cfdata_t, void *);
void gemattach_sbus(device_t, device_t, void *);
CFATTACH_DECL3_NEW(gem_sbus, sizeof(struct gem_sbus_softc),
gemmatch_sbus, gemattach_sbus, NULL, NULL, NULL, NULL, 0);
int
gemmatch_sbus(device_t parent, cfdata_t cf, void *aux)
{
struct sbus_attach_args *sa = aux;
return (strcmp("network", sa->sa_name) == 0);
}
void
gemattach_sbus(device_t parent, device_t self, void *aux)
{
struct sbus_attach_args *sa = aux;
struct gem_sbus_softc *gsc = device_private(self);
struct gem_softc *sc = &gsc->gsc_gem;
uint8_t enaddr[ETHER_ADDR_LEN];
sc->sc_dev = self;
/* Pass on the bus tags */
sc->sc_bustag = sa->sa_bustag;
sc->sc_dmatag = sa->sa_dmatag;
if (sa->sa_nreg < 2) {
printf("%s: only %d register sets\n",
device_xname(self), sa->sa_nreg);
return;
}
/*
* Map two register banks:
*
* bank 0: status, config, reset
* bank 1: various gem parts
*
*/
if (sbus_bus_map(sa->sa_bustag,
sa->sa_reg[0].oa_space,
sa->sa_reg[0].oa_base,
(bus_size_t)sa->sa_reg[0].oa_size,
0, &sc->sc_h2) != 0) {
aprint_error_dev(self, "cannot map registers\n");
return;
}
if (sbus_bus_map(sa->sa_bustag,
sa->sa_reg[1].oa_space,
sa->sa_reg[1].oa_base,
(bus_size_t)sa->sa_reg[1].oa_size,
0, &sc->sc_h1) != 0) {
aprint_error_dev(self, "cannot map registers\n");
return;
}
prom_getether(sa->sa_node, enaddr);
if (!strcmp("serdes", prom_getpropstring(sa->sa_node, "shared-pins")))
sc->sc_flags |= GEM_SERDES;
sc->sc_variant = GEM_SUN_GEM;
sc->sc_flags &= ~GEM_PCI;
/*
* SBUS config
*/
(void) bus_space_read_4(sa->sa_bustag, sc->sc_h2, GEM_SBUS_RESET);
delay(100);
bus_space_write_4(sa->sa_bustag, sc->sc_h2, GEM_SBUS_CONFIG,
GEM_SBUS_CFG_BSIZE128|GEM_SBUS_CFG_PARITY|GEM_SBUS_CFG_BMODE64);
sc->sc_chiprev = bus_space_read_4(sa->sa_bustag, sc->sc_h2,
GEM_SBUS_REVISION);
printf(": GEM Ethernet controller (%s), version %s (rev 0x%02x)\n",
sa->sa_name, prom_getpropstring(sa->sa_node, "version"),
sc->sc_chiprev);
gem_attach(sc, enaddr);
/* Establish interrupt handler */
if (sa->sa_nintr != 0)
gsc->gsc_ih = bus_intr_establish(sa->sa_bustag, sa->sa_pri, IPL_NET,
gem_intr, sc);
}
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